/* SPDX-License-Identifier: GPL-2.0 */

  /*
   * Copyright (C) 2012 Alexander Block.  All rights reserved.
   * Copyright (C) 2012 STRATO.  All rights reserved.

   */

  #ifndef BTRFS_SEND_H
  #define BTRFS_SEND_H

  #include "ctree.h"
  
  #define BTRFS_SEND_STREAM_MAGIC "btrfs-stream"
  #define BTRFS_SEND_STREAM_VERSION 1

  #define BTRFS_SEND_BUF_SIZE SZ_64K
  #define BTRFS_SEND_READ_SIZE (48 * SZ_1K)

  
  enum btrfs_tlv_type {
  	BTRFS_TLV_U8,
  	BTRFS_TLV_U16,
  	BTRFS_TLV_U32,
  	BTRFS_TLV_U64,
  	BTRFS_TLV_BINARY,
  	BTRFS_TLV_STRING,
  	BTRFS_TLV_UUID,
  	BTRFS_TLV_TIMESPEC,
  };
  
  struct btrfs_stream_header {
  	char magic[sizeof(BTRFS_SEND_STREAM_MAGIC)];
  	__le32 version;
  } __attribute__ ((__packed__));
  
  struct btrfs_cmd_header {
  	/* len excluding the header */
  	__le32 len;
  	__le16 cmd;
  	/* crc including the header with zero crc field */
  	__le32 crc;
  } __attribute__ ((__packed__));
  
  struct btrfs_tlv_header {
  	__le16 tlv_type;
  	/* len excluding the header */
  	__le16 tlv_len;
  } __attribute__ ((__packed__));
  
  /* commands */
  enum btrfs_send_cmd {
  	BTRFS_SEND_C_UNSPEC,
  
  	BTRFS_SEND_C_SUBVOL,
  	BTRFS_SEND_C_SNAPSHOT,
  
  	BTRFS_SEND_C_MKFILE,
  	BTRFS_SEND_C_MKDIR,
  	BTRFS_SEND_C_MKNOD,
  	BTRFS_SEND_C_MKFIFO,
  	BTRFS_SEND_C_MKSOCK,
  	BTRFS_SEND_C_SYMLINK,
  
  	BTRFS_SEND_C_RENAME,
  	BTRFS_SEND_C_LINK,
  	BTRFS_SEND_C_UNLINK,
  	BTRFS_SEND_C_RMDIR,
  
  	BTRFS_SEND_C_SET_XATTR,
  	BTRFS_SEND_C_REMOVE_XATTR,
  
  	BTRFS_SEND_C_WRITE,
  	BTRFS_SEND_C_CLONE,
  
  	BTRFS_SEND_C_TRUNCATE,
  	BTRFS_SEND_C_CHMOD,
  	BTRFS_SEND_C_CHOWN,
  	BTRFS_SEND_C_UTIMES,
  
  	BTRFS_SEND_C_END,

  	BTRFS_SEND_C_UPDATE_EXTENT,

  	__BTRFS_SEND_C_MAX,
  };
  #define BTRFS_SEND_C_MAX (__BTRFS_SEND_C_MAX - 1)
  
  /* attributes in send stream */
  enum {
  	BTRFS_SEND_A_UNSPEC,
  
  	BTRFS_SEND_A_UUID,
  	BTRFS_SEND_A_CTRANSID,
  
  	BTRFS_SEND_A_INO,
  	BTRFS_SEND_A_SIZE,
  	BTRFS_SEND_A_MODE,
  	BTRFS_SEND_A_UID,
  	BTRFS_SEND_A_GID,
  	BTRFS_SEND_A_RDEV,
  	BTRFS_SEND_A_CTIME,
  	BTRFS_SEND_A_MTIME,
  	BTRFS_SEND_A_ATIME,
  	BTRFS_SEND_A_OTIME,
  
  	BTRFS_SEND_A_XATTR_NAME,
  	BTRFS_SEND_A_XATTR_DATA,
  
  	BTRFS_SEND_A_PATH,
  	BTRFS_SEND_A_PATH_TO,
  	BTRFS_SEND_A_PATH_LINK,
  
  	BTRFS_SEND_A_FILE_OFFSET,
  	BTRFS_SEND_A_DATA,
  
  	BTRFS_SEND_A_CLONE_UUID,
  	BTRFS_SEND_A_CLONE_CTRANSID,
  	BTRFS_SEND_A_CLONE_PATH,
  	BTRFS_SEND_A_CLONE_OFFSET,
  	BTRFS_SEND_A_CLONE_LEN,
  
  	__BTRFS_SEND_A_MAX,
  };
  #define BTRFS_SEND_A_MAX (__BTRFS_SEND_A_MAX - 1)
  
  #ifdef __KERNEL__

  long btrfs_ioctl_send(struct file *mnt_file, struct btrfs_ioctl_send_args *arg);

  #endif

  
  #endif